Hello Derek, > > That's interesting about not seeing any interlacing artifacts in the > compositor window. Two things might be making this happen. First, > if > you're not viewing the footage at 100% its original size (have the > comp > window zoomed out, that is), the scaling can slightly mute the > visible > interlacing. 75% is one of those zoom levels where the artifacts > merge > together a bit. Try popping to 100% and scrub through the frames to > see > if it shows up.
I will try it. I think I tried it before, but maybe the zoom level was not high enough. Display is not an issue anyway, I am more interested in what is going to the disk.... > Nasty huh? Interlacing really only shows up in areas of high motion > --where there's a decently large difference between the two 60fps > half-frames that make up a single interlaced frame. So what may be > happening in your case is that there simply isn't much difference > between > the fields (half-frames). Might be worth shooting a few seconds of a > quickly moving object just for testing purposes. Yes I agree, but I can see the interlacing effect in xine when I play the original file. If I simply render it without any effects and do not pipe it via mpeg2enc, xine does not show any interlacing effects at all. With the mpeg2enc pipe, interlacing is visable in xine again. > > It's also curious that mpeg2enc seems to be the source of the > interlacing. > Perhaps is there an option to turn it off? The whole interlacing > idea > came from the technology of old TVs --something to the effect of the > phosphors couldn't release their light quickly enough to display > smooth > motion using full frames. One row would receive light on the way up, > and > the the other on the way down as the first were draining. Anyway, > point > being, new TVs don't really have those problems --especially not > plasmas > and LCDs- so there really isn't a solid reason to put interlaced > footage > on a DVD. We'd do this all the time at the production studio where I > worked. My understanding of history on this is that the electronics was slow so it was not posslbe to do film (full frame at a time) not even a progressive scan (full frame scanned), so they decided to do a scan of 1/2 of a frame (call it field) and increase the field rate to 60 Hz, so that the frame rate is still 30Hz. Slow phosphorus is actually bad. New CRT computer monitors employ "fast" "phosphorus" and for me, I can not use a new CRT monitor at less than 75Hz refresh rate, I can see the flicker. Unfrotutantely, some new TV sets put have "fast" CRTs in them and I can not watch such a TV since the rate is fixed to 60Hz. Anyway, I thought about making a progressive scan disk. The question is if I can watch it on a regular CRT TV set with a regular DVDplayer. Do DVDplayers detect/read the progressive scan flag and do interlacing? > > Just found a nice article about ffmpeg vs. mpeg2enc that might be > useful: > http://www.transcoding.org/cgi-bin/transcode?FFmpeg_Vs._Mpeg2enc thanks, this is an interesting article.. > > Consumer cameras that shoot progressive? Naw, not really any of them > out > there. Heck, not even that many professional cameras shoot I see... > > And finally, about the whirl plugin's quirks about interlaced footage > all > I can really say is that that is one of Cinelerra's slight bugs; > filters > can get a little confused about things sometimes for no clear reason. > > Annoying, most definitely, but even Premiere plenty of such. :) > > Considering I'm writing this a few hours after I woke up, I've > probably > spoken in confusing half-sentences (interlaced sentences?), so let me > know > if there's anything else I can help with. :D that was very understandable and useful. Could you comment on the above? Thanks a lot ZF ____________________________________________________________________________________ Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail, news, photos & more. http://mobile.yahoo.com/go?refer=1GNXIC _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
